<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>表格细线边框</title>
    <style>
        table {
            width: 500px;
            height: 250px;
        }
        table, th, td {
            border: 1px solid black;
            border-collapse: collapse;
            text-align: center;
        }
        .up {
            background: url("../img/arrow_up.png") no-repeat center;
        }
        .down {
            background: url("../img/arrow_down.png") no-repeat center;
        }
    </style>
</head>
<body>
<table align="center" cellspacing="0">
    <tr>
        <th>排名</th>
        <th>关键词</th>
        <th>趋势</th>
        <th>进入搜索</th>
        <th>最近七日</th>
        <th>相关链接</th>
    </tr>
    <tr>
        <td>1</td>
        <td>鬼吹灯</td>
        <td class="down"></td>
        <td>456</td>
        <td>123</td>
        <td>
            <a href="#">贴吧</a>
            <a href="#">图片</a>
            <a href="#">百科</a>
        </td>
    </tr>
    <tr>
        <td>1</td>
        <td>鬼吹灯</td>
        <td class="down"></td>
        <td>456</td>
        <td>123</td>
        <td>
            <a href="#">贴吧</a>
            <a href="#">图片</a>
            <a href="#">百科</a>
        </td>
    </tr>
    <tr>
        <td>1</td>
        <td>西游记</td>
        <td class="up"></td>
        <td>456</td>
        <td>123</td>
        <td>
            <a href="#">贴吧</a>
            <a href="#">图片</a>
            <a href="#">百科</a>
        </td>
    </tr>
    <tr>
        <td>1</td>
        <td>鬼吹灯</td>
        <td class="down"></td>
        <td>456</td>
        <td>123</td>
        <td>
            <a href="#">贴吧</a>
            <a href="#">图片</a>
            <a href="#">百科</a>
        </td>
    </tr>
    <tr>
        <td>1</td>
        <td>鬼吹灯</td>
        <td class="down"></td>
        <td>456</td>
        <td>123</td>
        <td>
            <a href="#">贴吧</a>
            <a href="#">图片</a>
            <a href="#">百科</a>
        </td>
    </tr>
    <tr>
        <td>1</td>
        <td>鬼吹灯</td>
        <td class="down"></td>
        <td>456</td>
        <td>123</td>
        <td>
            <a href="#">贴吧</a>
            <a href="#">图片</a>
            <a href="#">百科</a>
        </td>
    </tr>
</table>
</body>
</html>